JPH0543297A - Inorganic composition for extrusion - Google Patents
Inorganic composition for extrusionInfo
- Publication number
- JPH0543297A JPH0543297A JP20076091A JP20076091A JPH0543297A JP H0543297 A JPH0543297 A JP H0543297A JP 20076091 A JP20076091 A JP 20076091A JP 20076091 A JP20076091 A JP 20076091A JP H0543297 A JPH0543297 A JP H0543297A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- extrusion
- inorganic substance
- pts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/042—Magnesium silicates, e.g. talc, sepiolite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/46—Water-loss or fluid-loss reducers, hygroscopic or hydrophilic agents, water retention agents
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00129—Extrudable mixtures
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Civil Engineering (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、壁材、屋根材、床材
等の建築用資材として、また、パイプ、パネル、トラフ
等の土木用資材などとして好適な繊維補強無機質体、特
に、中空の無機質成型体を押出成型するのに適した無機
質組成物に関する。BACKGROUND OF THE INVENTION The present invention relates to a fiber-reinforced inorganic material, particularly a hollow material, suitable as a building material such as wall materials, roofing materials and floor materials, and as a civil engineering material such as pipes, panels and troughs. The present invention relates to an inorganic composition suitable for extrusion-molding the inorganic molded body.
【０００２】[0002]
【従来の技術】水硬性無機質物質と補強繊維とを含む無
機質組成物を押出成型し、得られた成型体を養生して繊
維補強無機質体を得ることは、よく知られている。この
ような方法において、特に、中空の成型体を得る場合、
組成物は、十分な流動性、押出性を有し、しかも、成型
体に十分な保型性を与えることができるものであること
が必要である。すなわち、組成物には、流動性、押出性
と、保型性という、相反する特性が要求される。しかし
ながら、流動性を向上させようとすると保型性が低下
し、また、保型性を向上させようとすると押出圧が上昇
して押出性が悪くなるなど、双方の性質を同時にバラン
スよく満足させることは、なかなか難しいことである。2. Description of the Related Art It is well known that an inorganic composition containing a hydraulic inorganic substance and a reinforcing fiber is extrusion-molded and the molded body obtained is cured to obtain a fiber-reinforced inorganic body. In such a method, particularly when a hollow molded body is obtained,
It is necessary that the composition has sufficient fluidity and extrudability and is capable of imparting sufficient shape retention to the molded product. That is, the composition is required to have contradictory properties such as fluidity, extrudability, and shape retention. However, when it is attempted to improve the fluidity, the shape-retaining property is lowered, and when the shape-retaining property is attempted to be improved, the extrusion pressure increases and the extrudability deteriorates. That is quite difficult.
【０００３】さて、上述したような特性が要求される組
成物として、特開昭６２−４１７８３号公報は、１０〜
７０重量％の水硬性無機質物質と、５〜２０重量％の球
状シリカヒューム微粒子と、１〜１０重量％のタルク
と、１〜７重量％のセリサイトと、１０〜２０重量％の
軽量骨材と、５〜２５重量％のアスベストとを含む組成
物を提案している。この組成物は、上記の組成を有する
ことにより、成形助剤、たとえば保水剤が不要であると
しているが、押出時に水と無機質物質とが分離しやす
く、押出圧が上昇する傾向がある。また、分離に伴い、
成型体に亀裂を生じやすく、その場合、得られる無機質
体は、強度、特に曲げ強度や、耐衝撃性が低いものとな
る。As a composition required to have the above-mentioned properties, JP-A-62-41783 discloses a composition of 10
70 wt% hydraulic inorganic substance, 5-20 wt% spherical silica fume fine particles, 1-10 wt% talc, 1-7 wt% sericite, 10-20 wt% lightweight aggregate And 5 to 25% by weight of asbestos are proposed. The composition described above does not require a molding aid, such as a water retention agent, because it has the above composition, but water and the inorganic substance are easily separated during extrusion, and the extrusion pressure tends to increase. Also, with the separation,
The molded body is likely to be cracked, in which case the resulting inorganic material has low strength, particularly bending strength and impact resistance.
【０００４】[0004]
【発明が解決しようとする課題】この発明の目的は、従
来の組成物の上述した問題点を解決し、流動性、押出性
と保型性とのバランスをとりつつ成型を行うことができ
るばかりか、強度、特に曲げ強度や、耐衝撃性、耐火性
等の物性に優れた繊維補強無機質体を得ることができる
押出成型用無機質組成物を提供するにある。SUMMARY OF THE INVENTION The object of the present invention is to solve the above-mentioned problems of conventional compositions, and to perform molding while keeping the balance between fluidity, extrudability and shape retention. On the other hand, it is an object of the present invention to provide an inorganic composition for extrusion molding capable of obtaining a fiber-reinforced inorganic material excellent in physical properties such as strength, particularly bending strength, impact resistance and fire resistance.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、この発明は、水硬性無機質物質と、その水硬性無機
質物質１００重量部に対して、１〜３０重量部の針状タ
ルク、０．５〜５重量部のパルプもしくは合成繊維の短
繊維、および、０．５〜３重量部の保水剤とを含むこと
を特徴とする押出成型用無機質組成物を提供する。組成
物は、好ましくは、水硬性無機質物質１００重量部に対
して１〜３０重量部の針状ワラストナイトをさらに含
む。In order to achieve the above object, the present invention provides a hydraulic inorganic substance and 1 to 30 parts by weight of acicular talc, based on 100 parts by weight of the hydraulic inorganic substance. Provided is an inorganic composition for extrusion, comprising 5 to 5 parts by weight of pulp or synthetic staple fibers, and 0.5 to 3 parts by weight of a water retention agent. The composition preferably further comprises 1 to 30 parts by weight of acicular wollastonite based on 100 parts by weight of the hydraulic inorganic substance.
【０００６】この発明をさらに詳細に説明するに、水硬
性無機質物質は、得られる無機質体の母材となるもの
で、水和反応硬化成分として、セメントと珪酸質（Ｓｉ
Ｏ2 ）とを含むものである。セメントとしては、ポルト
ランドセメント、アルミナセメント、高炉セメント等を
使用することができる。また、珪酸質としては、通常、
珪砂等の結晶性シリカを使用する。両者の割合は、重量
比で、セメント１に対して珪酸質０．３〜１程度でよ
い。To explain the present invention in more detail, a hydraulic inorganic substance serves as a base material of the obtained inorganic substance, and as a hydration reaction hardening component, cement and siliceous material (Si) are used.
O 2 ). As the cement, Portland cement, alumina cement, blast furnace cement or the like can be used. Moreover, as a siliceous substance,
Use crystalline silica such as silica sand. The ratio of both may be about 0.3 to 1 siliceous with respect to 1 cement by weight ratio.
【０００７】また、針状タルクは、押出成型時における
組成物の流動性をほどよく向上させるとともに、得られ
る無機質体の、特に曲げ強度や耐衝撃性を向上させる作
用をもつ。また、得られる無機質体中に取り込まれた水
分が高温下において爆発的に飛散する、いわゆる爆裂を
防止し、無機質体の耐火性を向上させる。Further, the acicular talc has the functions of improving the fluidity of the composition during extrusion molding and improving the bending strength and impact resistance of the resulting inorganic material. Further, it prevents so-called explosion, in which moisture taken into the obtained inorganic material explosively scatters at high temperature, and improves the fire resistance of the inorganic material.
【０００８】ここで、針状タルクは、Ｍｇ3 Ｓｉ4 Ｏ10
（ＯＨ）2 を主成分とするもので、直径が０．０５〜１
００μｍ、アスペクト比が３〜８０の針状結晶を多く含
むものとして定義され、ＪＩＳ Ｋ５１０１に規定され
る方法によるかさ比容が０．３〜１．５cc／g 、ＪＩＳ
Ｋ００６９に規定される方法による、３００メッシュ
のふるい残分が２０〜５０重量％の範囲にあることで特
徴づけられる。よく知られているように、一般にタルク
といえば、かさ比容が１．７〜９cc／g 、ふるい残分が
２０重量％以下である板状や葉片状のものをいうが、針
状タルクは、上述したようにこれらのタルクとは全く異
なるものである。Here, the acicular talc is Mg 3 Si 4 O 10
Mainly composed of (OH) 2 with a diameter of 0.05-1
It is defined as containing a large number of needle-like crystals with a diameter of 00 μm and an aspect ratio of 3 to 80, and has a bulk specific volume of 0.3 to 1.5 cc / g according to the method specified in JIS K5101, JIS
It is characterized by a 300 mesh sieving residue in the range of 20 to 50% by weight according to the method specified in K0069. As is well known, generally speaking, talc is a plate-like or leaf-like one having a bulk specific volume of 1.7 to 9 cc / g and a sieve residue of 20% by weight or less. Is completely different from these talcs as described above.
【０００９】上述した針状タルクは、水硬性無機質物質
１００重量部に対して、１〜３０重量部含まれるように
する。１重量部未満では、流動性や耐火性の向上効果が
小さく、また、３０重量部を超えると、水硬性無機質物
質間の結合力が弱くなって曲げ強度や耐衝撃性が低下す
るようになる。好ましい範囲は、３〜２０重量部であ
る。The above-mentioned needle talc is contained in an amount of 1 to 30 parts by weight based on 100 parts by weight of the hydraulic inorganic substance. If it is less than 1 part by weight, the effect of improving the fluidity and fire resistance is small, and if it exceeds 30 parts by weight, the bonding strength between the hydraulic inorganic substances becomes weak and the bending strength and the impact resistance decrease. .. A preferred range is 3 to 20 parts by weight.
【００１０】一方、パルプや合成繊維の短繊維は、成型
体の保型性や、無機質体の耐火性を向上させる。パルプ
としては、針葉樹パルプ、広葉樹パルプ等の木材パルプ
を使用することができる。パルプとしては、また、ポリ
エチレン、ポリプロピレン等のポリオレフィンや、芳香
族ポリアミドや、アクリル等の合成パルプを使用するこ
とができる。合成繊維の短繊維としては、ポリエチレン
繊維、ポリプロピレン繊維等のポリオレフィン繊維や、
芳香族ポリアミド繊維や、アクリル繊維等からなる、平
均繊維長が１〜６mm程度の短繊維を使用することができ
る。保型性や耐火性をより向上させるためには、細く、
かつ、フィブリル化しているものがよく、パルプが好ま
しい。また、木材パルプは、成型体の安定した養生が行
えるので好ましい。木材パルプを使用する場合、その量
は、組成物中における分散性等を考慮すると、水硬性無
機質物質１００重量部に対して０．５〜２重量部の範囲
とするのがよい。On the other hand, short fibers such as pulp and synthetic fibers improve the shape retention of the molded body and the fire resistance of the inorganic body. As the pulp, wood pulp such as softwood pulp and hardwood pulp can be used. As the pulp, polyolefins such as polyethylene and polypropylene, aromatic polyamide, and synthetic pulp such as acryl can be used. Short fibers of synthetic fibers include polyolefin fibers such as polyethylene fibers and polypropylene fibers,
Short fibers having an average fiber length of about 1 to 6 mm, such as aromatic polyamide fibers and acrylic fibers, can be used. To improve shape retention and fire resistance,
In addition, fibrillated ones are preferable, and pulp is preferable. Further, wood pulp is preferable because it allows stable curing of the molded body. When wood pulp is used, its amount is preferably in the range of 0.5 to 2 parts by weight with respect to 100 parts by weight of the hydraulic inorganic substance in consideration of dispersibility in the composition.
【００１１】パルプや合成繊維の短繊維は、水硬性物質
１００重量部に対して０．５〜５重量部の範囲とする。
０．５重量部未満では、保型性の向上効果が小さく、ま
た、高温下で無機質体の爆裂を招くことがある。一方、
５重量部を超えると、分散性が悪くなり、得られる無機
質体の曲げ強度や耐衝撃性が低下するようになる。Short fibers such as pulp and synthetic fibers are in the range of 0.5 to 5 parts by weight with respect to 100 parts by weight of the hydraulic material.
If the amount is less than 0.5 parts by weight, the effect of improving the shape retention property is small, and the inorganic substance may explode at high temperature. on the other hand,
When it exceeds 5 parts by weight, the dispersibility becomes poor, and the bending strength and impact resistance of the resulting inorganic material deteriorate.
【００１２】一方、保水剤は、押出成型時に、水硬性無
機質物質と水との結合力が弱くなって両者が分離するの
を防止するものである。量は、水硬性無機質物質１００
重量部に対して０．５〜３重量部の範囲がよい。０．５
重量部未満では、押出圧が急激に上昇することがあり、
また、水硬性無機質物質が脆くなって押出操作ができな
くなったりする。３重量部を超えると、保水剤による粘
性の上昇のために流動性が悪くなり、押出圧が上昇する
ようになる。On the other hand, the water retention agent prevents the hydraulic inorganic substance and water from being separated from each other due to their weak binding force during extrusion. The amount is 100% hydraulic inorganic substance.
The range of 0.5 to 3 parts by weight is preferable with respect to parts by weight. 0.5
If it is less than part by weight, the extrusion pressure may rise rapidly,
Further, the hydraulic inorganic substance becomes brittle, and the extrusion operation cannot be performed. When it exceeds 3 parts by weight, the fluidity is deteriorated due to the increase in viscosity due to the water retention agent, and the extrusion pressure is increased.
【００１３】保水剤としては、でんぷん等の水溶性多糖
類や、メチルセルロース、ヒドロキシプロピルセルロー
ス、ヒドロキシメチルセルロース、ヒドロキシエチルメ
チルセルロース、ヒドロキシプロピルメチルセルロー
ス、ヒドロキシプロピルエチルセルロース等の水溶性セ
ルロース誘導体を使用することができる。セルロース誘
導体のなかでも、特に、メチルセルロース、ヒドロキシ
メチルセルロース、ヒドロキシプロピルメチルセルロー
ス、ヒドロキシプロピルエチルメチルセルロースが好ま
しい。また、でんぷんと水溶性セルロース誘導体とを併
用することも、好ましい。As the water retention agent, water-soluble polysaccharides such as starch and water-soluble cellulose derivatives such as methyl cellulose, hydroxypropyl cellulose, hydroxymethyl cellulose, hydroxyethyl methyl cellulose, hydroxypropyl methyl cellulose and hydroxypropyl ethyl cellulose can be used. Among the cellulose derivatives, methyl cellulose, hydroxymethyl cellulose, hydroxypropyl methyl cellulose and hydroxypropyl ethyl methyl cellulose are particularly preferable. It is also preferable to use starch and a water-soluble cellulose derivative together.
【００１４】さて、組成物は、上述したように、水硬性
無機質物質、針状タルク、パルプもしくは合成繊維の短
繊維および保水剤を特定の範囲で含むことを必須とする
が、これら以外に、たとえば、水硬性無機質物質に、フ
ライアッシュ、白土、シリカヒューム、珪藻土等の非晶
質シリカ（ポゾラン活性シリカ）を加えることもでき
る。これらを併用すると、得られる無機質体の曲げ強度
が向上するようになる。ただ、シリカヒュームを使用す
るときは、シリカヒュームは爆裂を引き起こしやすく、
無機質体の耐火性が低下するようになるので、水硬性無
機質物質１００重量部に対して５重量部以下に抑えるの
が好ましい。As described above, the composition must contain a hydraulic inorganic substance, acicular talc, short fibers of pulp or synthetic fiber, and a water retention agent in a specific range, but in addition to these, For example, amorphous silica (pozzolan active silica) such as fly ash, clay, silica fume, diatomaceous earth can be added to the hydraulic inorganic substance. When these are used together, the bending strength of the obtained inorganic material is improved. However, when using silica fume, silica fume tends to cause an explosion,
Since the fire resistance of the inorganic substance is lowered, it is preferable to limit the amount to 5 parts by weight or less with respect to 100 parts by weight of the hydraulic inorganic substance.
【００１５】また、針状タルクに加えて、針状ワラスト
ナイト、セピオライト、チタン酸カリウムウイスカ、炭
化ケイ素ウイスカ等、特に、曲げ強度、耐衝撃性、耐火
性の向上作用の大きい針状ワラストナイトを使用するこ
とができる。量は、水硬性無機質物質１００重量部に対
して１〜３０重量部の範囲がよい。同様に、平均繊維長
が１〜６mmの、耐アルカリガラス繊維、ロックウール、
スチール繊維、アルミナ繊維等の無機質短繊維を加える
ことができる。In addition to acicular talc, acicular wollastonite, sepiolite, potassium titanate whiskers, silicon carbide whiskers, etc., especially acicular warast having a great effect of improving bending strength, impact resistance and fire resistance. Knights can be used. The amount is preferably in the range of 1 to 30 parts by weight with respect to 100 parts by weight of the hydraulic inorganic substance. Similarly, alkali-resistant glass fibers with average fiber length of 1 to 6 mm, rock wool,
Inorganic short fibers such as steel fibers and alumina fibers can be added.
【００１６】また、より軽量な無機質体を得るために、
パーライト、シラスバルーン、ガラスバルーン等の軽量
骨材を加えてもよい。In order to obtain a lighter weight inorganic material,
Light weight aggregates such as perlite, shirasu balloon and glass balloon may be added.
【００１７】この発明の組成物を使用した無機質体の製
造は、周知の方法によることができる。たとえば、組成
物をアイリッヒミキサー等で混合し、水硬性無機質物質
１００重量部に対して２０〜３０重量部ほどの水を加え
てさらに混合した後、押出機を使用して押出成型し、得
られた成型体を養生して無機質体とする。無機質体の形
状は、押出機のダイスを変えることで、中実、中空等、
また、板状、柱状等、任意に変えることができる。ま
た、養生の方法には、自然養生、５０〜１００℃の温度
下でのスチーム養生、１４０〜２００℃温度下でのオー
トクレーブ養生等がある。これらを組み合わせてもよ
い。The production of the inorganic substance using the composition of the present invention can be carried out by a known method. For example, the composition is mixed by an Erich mixer or the like, and 20 to 30 parts by weight of water is added to 100 parts by weight of the hydraulic inorganic substance and further mixed, and then extrusion-molded using an extruder to obtain The formed body is cured to be an inorganic body. The shape of the inorganic material is solid, hollow, etc. by changing the die of the extruder.
Further, it can be arbitrarily changed into a plate shape, a column shape, or the like. The curing method includes natural curing, steam curing at a temperature of 50 to 100 ° C, autoclave curing at a temperature of 140 to 200 ° C, and the like. You may combine these.
【００１８】[0018]
【実施例１】６５重量部のポルトランドセメントと、３
５重量部の珪砂とからなる水硬性無機質物質に、その１
００重量部に対して、２０重量部の針状タルク（かさ比
容：０．５７cc／g 、３００メッシュのふるい残分：３
４重量％）、１．２５重量部の木材パルプ（平均長：２
mm）、および、１．６重量部のヒドロキシプロピルメチ
ルセルロースを加え、アイリッヒミキサーでよく混合し
た。Example 1 65 parts by weight of Portland cement and 3 parts
1 part for hydraulic inorganic substance consisting of 5 parts by weight of silica sand
20 parts by weight of acicular talc (bulk specific volume: 0.57 cc / g, 300 mesh sieve residue: 3 parts by weight)
4% by weight), 1.25 parts by weight of wood pulp (average length: 2
mm) and 1.6 parts by weight of hydroxypropylmethyl cellulose were added and mixed well with an Erich mixer.
【００１９】次に、上記混合物に水硬性無機質物質１０
０重量部に対して２３重量部の水を加え、ニーダーを用
いて混練した。これを、二軸スクリューを備えた押出機
を使用して１５mm角に押し出し、成型体を得た。このと
き、ダイス直前で測定した押出圧は、１２kg／cm2 であ
った。Next, a hydraulic inorganic substance 10 is added to the above mixture.
23 parts by weight of water was added to 0 parts by weight and kneaded using a kneader. This was extruded into a 15 mm square using an extruder equipped with a twin screw to obtain a molded body. At this time, the extrusion pressure measured immediately before the die was 12 kg / cm 2 .
【００２０】得られた成型体を５０cm長に切断し、スパ
ン長２４cmのエッジ上に静置し、中央部の撓みを測定し
たところ、３mmであった。また、成型体を２０cm長に切
断して一昼夜自然養生した後、７０℃で４時間スチーム
養生し、さらに、オートクレーブに投入して１８０℃で
９時間養生し、無機質体を得た。The molded body obtained was cut into a length of 50 cm, allowed to stand on an edge having a span length of 24 cm, and the bending of the central portion was measured and found to be 3 mm. Further, the molded body was cut into a length of 20 cm and naturally cured for a whole day and night, then steam-cured at 70 ° C. for 4 hours, and further put into an autoclave and cured at 180 ° C. for 9 hours to obtain an inorganic substance.
【００２１】得られた無機質体の曲げ強度（スパン長：
１０cm）は、３５０kg／cm2 であった。また、シャルピ
ー衝撃値は、１．６５kg・cm／cm2 であった。さらに、
無機質体を、７０℃／分の速度で７００℃まで昇温し、
その温度に１０分間保持した後に炉冷したが、爆裂する
ことはなかった。Bending strength (span length:
10 cm) was 350 kg / cm 2 . The Charpy impact value was 1.65 kg · cm / cm 2 . further,
The inorganic material is heated to 700 ° C. at a rate of 70 ° C./minute,
After holding at that temperature for 10 minutes, the furnace was cooled, but no explosion occurred.
【００２２】[0022]
【実施例２】水硬性無機質物質１００重量部に対して
７．５重量部の針状ワラストナイトをさらに加えたほか
は実施例１と同一組成の組成物を使用し、実施例１と同
様に押出成型した。押出圧力は１６kg／cm2 で、成型体
の撓みは１mmであった。また、得られた無機質体の曲げ
強度は３８０kg／cm2 、シャルピー衝撃値は１．８kg・
cm／cm2 であった。さらに、電気炉による耐火テストで
も、爆裂はなく、ひび割れもほとんど認められなかっ
た。Example 2 The same composition as in Example 1 was used except that 7.5 parts by weight of acicular wollastonite was further added to 100 parts by weight of the hydraulic inorganic substance. Extruded into The extrusion pressure was 16 kg / cm 2 , and the bending of the molded body was 1 mm. The bending strength of the obtained inorganic material is 380 kg / cm 2 , and the Charpy impact value is 1.8 kg.
It was cm / cm 2 . Furthermore, in the fire resistance test using an electric furnace, there was no explosion and almost no cracking was observed.
【００２３】[0023]
【実施例３】ヒドロキシプロピルメチルセルロースを１
重量部に減らし、０．６重量部のでんぷんを加えたほか
は実施例１と同一組成の組成物について、実施例１と同
様に押出成型した。押出圧力は１０kg／cm2 、成型体の
撓みは２mmであった。また、得られた無機質体の曲げ強
度は３６０kg／cm2 、シャルピー衝撃値は１．７kg・cm
／cm2 であった。さらに、耐火テストにおいても、爆裂
は生じなかった。[Example 3] Hydroxypropyl methylcellulose 1
A composition having the same composition as in Example 1 was extruded in the same manner as in Example 1 except that the amount was reduced to 0.6 part by weight and 0.6 part by weight of starch was added. The extrusion pressure was 10 kg / cm 2 , and the bending of the molded body was 2 mm. The bending strength of the obtained inorganic material is 360 kg / cm 2 , and the Charpy impact value is 1.7 kg · cm.
It was / cm 2 . Furthermore, no explosion occurred in the fire resistance test.
Claims (2)
質１００重量部に対して、１〜３０重量部の針状タル
ク、０．５〜５重量部のパルプもしくは合成繊維の短繊
維、および、０．５〜３重量部の保水剤とを含むことを
特徴とする押出成型用無機質組成物。1. A hydraulic inorganic substance, 1 to 30 parts by weight of acicular talc, 0.5 to 5 parts by weight of pulp or synthetic fibers, and 100 parts by weight of the hydraulic inorganic substance. , 0.5 to 3 parts by weight of a water retention agent, and an inorganic composition for extrusion molding.
質１００重量部に対して、１〜３０重量部の針状タル
ク、１〜３０重量部の針状ワラストナイト、０．５〜２
重量部の木材パルプ、および、０．５〜３重量部の保水
剤とを含むことを特徴とする押出成型用無機質組成物。2. A hydraulic inorganic substance, and 1 to 30 parts by weight of acicular talc, 1 to 30 parts by weight of acicular wollastonite, and 0.5 to 2 per 100 parts by weight of the hydraulic inorganic substance.
An extrusion-use inorganic composition, characterized by comprising parts by weight of wood pulp and 0.5 to 3 parts by weight of a water retention agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20076091A JPH0543297A (en) | 1991-08-09 | 1991-08-09 | Inorganic composition for extrusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20076091A JPH0543297A (en) | 1991-08-09 | 1991-08-09 | Inorganic composition for extrusion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0543297A true JPH0543297A (en) | 1993-02-23 |
Family
ID=16429720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20076091A Pending JPH0543297A (en) | 1991-08-09 | 1991-08-09 | Inorganic composition for extrusion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0543297A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003089561A (en) * | 2001-09-14 | 2003-03-28 | Taiheiyo Cement Corp | Method for producing bursting resistant high strength cement hardened body |
| JP2003112958A (en) * | 2001-10-09 | 2003-04-18 | Taiheiyo Cement Corp | Method for producing explosion resistant high strength cement hardened body |
| WO2018003612A1 (en) * | 2016-06-30 | 2018-01-04 | 株式会社クラレ | Fiber-reinforced carbonated cement molded product and method for producing same |
-
1991
- 1991-08-09 JP JP20076091A patent/JPH0543297A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003089561A (en) * | 2001-09-14 | 2003-03-28 | Taiheiyo Cement Corp | Method for producing bursting resistant high strength cement hardened body |
| JP2003112958A (en) * | 2001-10-09 | 2003-04-18 | Taiheiyo Cement Corp | Method for producing explosion resistant high strength cement hardened body |
| WO2018003612A1 (en) * | 2016-06-30 | 2018-01-04 | 株式会社クラレ | Fiber-reinforced carbonated cement molded product and method for producing same |
| JPWO2018003612A1 (en) * | 2016-06-30 | 2019-04-18 | 株式会社クラレ | Fiber-reinforced carbonated cement molding and method for producing the same |
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